49 new T dwarfs identified using methane imaging
49 new T dwarfs identified using methane imaging
复制标题
使用甲烷成像识别出 49 个新 T 矮星
DOI：
10.1093/mnras/stv380
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发表时间：
2015
影响因子：
4.8
通讯作者：
Cardoso C
中科院分区：
文献类型：
--
作者：
Cardoso C
我们提出了49个新的光度分类的T型矮星的发现，从大型红外和光学调查结合后续国家望远镜伽利略测光。我们使用了英国红外望远镜和斯隆数字巡天的多波段红外和光学测光来识别可能的褐矮星候选者，然后使用甲烷过滤测光来确认。我们已经定义了一个新的光度转换之间的CH 4s-CH 4l颜色和光谱类型的T4-T8棕矮星的基础上，已跟进使用甲烷光度和光谱的一部分样本。事实证明，使用甲烷差示测光作为T矮星光谱类型的代表是一种非常有效的技术。在45颗甲烷选择的褐矮星中，100%被证实是T矮星。未来的深度成像调查将产生大量微弱的褐矮星候选者样本，光谱学将不可行。当无法获得宽波长覆盖时，甲烷成像提供了一种仅使用一对近红外图像就可以有效地对此类调查中的候选人进行分类的方法。
We present the discovery of 49 new photometrically classified T dwarfs from the combination of large infrared and optical surveys combined with follow-up Telescopio Nazionale Galileo photometry. We used multiband infrared and optical photometry from the United Kingdom Infrared Telescope and Sloan Digital Sky Surveys to identify possible brown dwarf candidates, which were then confirmed using methane filter photometry. We have defined a new photometric conversion between CH4s − CH4l colour and spectral type for T4–T8 brown dwarfs based on a part of the sample that has been followed up using methane photometry and spectroscopy. Using methane differential photometry as a proxy for spectral type for T dwarfs has proved to be a very efficient technique. Of a subset of 45 methane selected brown dwarfs that were observed spectroscopically, 100 per cent were confirmed as T dwarfs. Future deep imaging surveys will produce large samples of faint brown dwarf candidates, for which spectroscopy will not be feasible. When broad wavelength coverage is unavailable, methane imaging offers a means to efficiently classify candidates from such surveys using just a pair of near-infrared images.
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加拿大-法国褐矮星调查中发现了 37 颗新 T 型褐矮星
DOI：
--
发表时间：
2011
期刊：
影响因子：
--
作者：
L. Albert;É. Artigau;P. Delorme;C. Reylé;T. Forveille;X. Delfosse;C. Willott
通讯作者：
C. Willott
天文学与天体物理学手稿编号（稍后将手动插入）NICS：TNG 近红外相机光谱仪⋆
DOI：
--
发表时间：
2001
期刊：
影响因子：
--
作者：
M. Horvat
通讯作者：
M. Horvat
光度棕矮星分类一、一种无需光谱即可识别并准确分类棕矮星大样本的方法
影响因子：
6.5
作者：
N. Skrzypek;S. Warren;J. Faherty;D. Mortlock;A. Burgasser;P. Hewett
通讯作者：
P. Hewett
DOI：
10.1111/j.1365-2966.2008.13729.x
发表时间：
2008-06
影响因子：
4.8
作者：
D. Pinfield;B. Burningham;M. Tamura;S. Leggett;N. Lodieu;P. Lucas;D. Mortlock;S. Warren;D. Homeier;M. Ishi;N. Deacon;R. McMahon;P. Hewett;M. Z. Osorio;E. Martín;H. Jones;B. Venemans;A. Day-Jones;P. Dobbie;S. Folkes;S. Dye;F. Allard;I. Baraffe;D. B. Navascués;S. Casewell;K. Chiu;G. Chabrier;F. Clarke;S. Hodgkin;A. Magazzú;M. McCaughrean;E. Moraux;T. Nakajima;Y. Pavlenko;C. U. O. Hertfordshire;UK.;N. A. Observatory;Japan.;G. Observatory;Usa;Instituto de Astrof'isica de Canarias-Instituto-de-Astrof'isica-de-Canarias-102997450;Spain.;I. -. London;Georg-August-Universitat;H Germany;Subaru Telescope;R. University;The Netherlands.;C. University;Anglo-Australian Observatory;Australia.;Cardiff University;U. Lyon;France.;C.R.A.L.;Laboratorio de Astrofisica Espacial y Fisica Fundamental-Laboratorio-de-Astrofisica-Espacial-y-Fisica-102686462;U. Leicester;U. Exeter;E. Observatory;Chile.;Fundaci'on Galileo Galilei-INAF;L. D. D. Grenoble-L.-D.-D.-Grenoble-102328384;M. A. Observatory;Ukraine;U. Wales
通讯作者：
D. Pinfield;B. Burningham;M. Tamura;S. Leggett;N. Lodieu;P. Lucas;D. Mortlock;S. Warren;D. Homeier;M. Ishi;N. Deacon;R. McMahon;P. Hewett;M. Z. Osorio;E. Martín;H. Jones;B. Venemans;A. Day-Jones;P. Dobbie;S. Folkes;S. Dye;F. Allard;I. Baraffe;D. B. Navascués;S. Casewell;K. Chiu;G. Chabrier;F. Clarke;S. Hodgkin;A. Magazzú;M. McCaughrean;E. Moraux;T. Nakajima;Y. Pavlenko;C. U. O. Hertfordshire;UK.;N. A. Observatory;Japan.;G. Observatory;Usa;Instituto de Astrof'isica de Canarias-Instituto-de-Astrof'isica-de-Canarias-102997450;Spain.;I. -. London;Georg-August-Universitat;H Germany;Subaru Telescope;R. University;The Netherlands.;C. University;Anglo-Australian Observatory;Australia.;Cardiff University;U. Lyon;France.;C.R.A.L.;Laboratorio de Astrofisica Espacial y Fisica Fundamental-Laboratorio-de-Astrofisica-Espacial-y-Fisica-102686462;U. Leicester;U. Exeter;E. Observatory;Chile.;Fundaci'on Galileo Galilei-INAF;L. D. D. Grenoble-L.-D.-D.-Grenoble-102328384;M. A. Observatory;Ukraine;U. Wales
来自 UKIDSS 大面积调查的 1500 deg2 近红外自行目录
影响因子：
4.8
作者：
L. Smith;P. Lucas;B. Burningham;H. Jones;R. Smart;A. Andrei;A. Andrei;A. Andrei;S. Catalan;D. Pinfield
通讯作者：
D. Pinfield